JP6317688B2 - Hot air heater - Google Patents

Description

  The present invention relates to a warm air heating device that generates warm air to heat a room.

  2. Description of the Related Art Conventionally, hot air heaters that heat indoors by burning fuel such as kerosene or gas and discharging the combustion exhaust gas as hot air have been widely used. This type of heater has a feature of excellent warmth, but on the other hand, due to the property of burning fuel, oxygen is consumed and carbon dioxide increases, so indoor air is regularly ventilated. There is a need to.

  In addition to the above-mentioned heating appliances, air conditioners, oil heaters, heat storage devices, and the like are also used as appliances for heating a room. These heaters have the advantage of not requiring ventilation because they do not consume oxygen, but they are inferior to those that use the heat generated by combustion directly for heating, so immediately after heating operation is started Can't warm the room. Especially in cold districts, room temperature does not rise easily even when trying to heat a room only with an air conditioner or oil heater, so there is a problem that the cold state will continue for a while even after starting operation.

  In this way, each heating appliance has its characteristics depending on the system. Therefore, it is considered that a comfortable indoor environment can be made by compensating for the respective drawbacks if heating appliances having different characteristics are used in combination. For example, when using an air conditioner, oil heater, etc., it is possible to make up for the lack of heating capacity by operating together with a heating device with excellent warm-up characteristics. Great effect is expected for improvement. However, since individual heating appliances are designed to control the heating capacity on the premise that they are used alone, even if they are used in combination, it is not always possible to take full advantage of each other's advantages. .

  Then, in order to solve this problem, the method and heating system which communicate control data between several heating appliances and control both heating capability are considered (patent document 1). By communicating the control data and controlling the heating appliance in this way, it is possible to prevent the room from being overheated and to simultaneously realize comfort and energy saving.

JP 2004-257656 A

  However, since the method as proposed in the above-mentioned patent document is based on the premise that control data is communicated, the heating operation can be linked and controlled only between limited appliances having communication means. Most common heaters do not have such communication means. For this reason, even if a fan heater is added in a room that originally used an air conditioner to supplement the heating capacity and quick heating, it is impossible to control the fan heater in conjunction with the air conditioner.

  The present invention is for solving the above-mentioned problems, and can perform the maximum use of the advantages of each of the heating appliances without using data communication between them and operating in combination with a plurality of heating appliances. It aims at providing the heating apparatus which can perform heating operation.

The present invention includes an operation mode switching unit that switches an operation mode, an output determination unit that determines a heating output, a heat generation unit that generates heat by burning fuel based on the heating output determined by the output determination unit, Room temperature detecting means for detecting, and the operation mode includes at least a normal operation mode and a combined operation mode to be selected when other heating appliances are used in combination, and the output determining means includes the normal operation mode. Determines the heating output from the room temperature and the set temperature so that the room temperature is maintained near the set temperature. In the combined operation mode, the heating output is decreased after a predetermined time has elapsed from the start of the combined operation mode, and the heating output reaches a predetermined value. Or after the room temperature reaches a preset temperature or a predetermined temperature lower than the preset temperature, the heat generating means is stopped to stop the heating operation. It is a bunch apparatus.

Further, an operation mode switching means for switching the operation mode, an output determining means for determining the heating output, a heat generating means for generating heat by burning fuel based on the heating output determined by the output determining means, and detecting a room temperature Room temperature detecting means, and the operation mode includes at least a normal operation mode and a combined operation mode selected when other heating appliances are used in combination, and the output determining means has a room temperature in the normal operation mode. The heating output is determined so as to maintain the room temperature from the set temperature and near the set temperature, and in the combined operation mode, the heating output is decreased after a predetermined time has elapsed from the start of the combined operation mode, and the heating output reaches a predetermined value, Alternatively, after the room temperature reaches a predetermined temperature lower than the set temperature, the heat generating unit is stopped to stop the heating operation.

Further, when stopping the heating operation in the combined operation mode is adapted to indicate that the heating operation is stopped, according to claim 1, wherein not to perform the resumption of heating operation in the automatic This is a warm air heating device.

Further, the output determining means reduces the heating output stepwise when a predetermined time has elapsed from the start of the combined operation mode, and the difference between the set temperature and the room temperature becomes a predetermined value or more while the heating output is decreasing. The warm air heating device according to any one of claims 1 to 3 , wherein the heating output is maintained when the air is heated.

Further, the output determining means reduces the heating output in a stepwise manner when a predetermined time has elapsed from the start of the combined operation mode, and the difference between the set temperature and the room temperature is not less than a first predetermined value while the heating output is decreasing. any and became increased stepwise heating output when, according to claim 1 to 3, characterized in that reducing stepwise the heating output when the difference between the set temperature and the room temperature becomes within the second predetermined value It is a hot air heating apparatus as described in any one .

  By configuring as described above, when heating is performed using a plurality of heating appliances in combination, it is possible to perform heating comfortably by using the advantages of each heating appliance, and data communication is required. it becomes possible to perform the control between any order not such heaters.

It is an internal block diagram of the fan heater which is an example of a warm air heating apparatus. It is a principal part block diagram of the fan heater which is an example of a warm air heating apparatus. 4 is a flowchart illustrating the operation of the fan heater in the combined operation mode of the first embodiment. It is a time chart explaining the time change of the heating output in the combined operation mode of Example 1, and room temperature. It is a flowchart showing operation | movement of the fan heater in the combined operation mode of Example 2. 10 is a flowchart showing the operation of the fan heater in the combined operation mode of Example 3.

  Embodiments of the present invention that are considered to be suitable will be briefly described by showing the effects of the present invention.

  The present invention is a hot air heating apparatus having a combined operation mode that is selected when used in combination with other heating appliances in addition to a normal operation mode for setting a heating output from a set temperature and a room temperature. When the operation mode is selected, the heating output is forcibly reduced when a predetermined time has elapsed after the operation is started, and the further reduced heating output reaches a predetermined value, or from the set temperature or the set temperature. After reaching a low predetermined temperature, the heat generating means is stopped to stop the heating operation.

  The hot-air heating device according to the present invention has a feature that it is excellent in quick warming, and this combined operation mode is selected when heating a room using a heater that is inferior in quick warming. This is a heating operation that makes the best use of each other's advantages. That is, when the combined operation mode is selected, the room temperature is quickly raised to the set temperature by the heating capability of the warm air heating device having quick warming until a predetermined time has elapsed from the start of operation. And when predetermined time passes from the start of combined operation mode, the heating output of a warm air heating apparatus is reduced, the heating capability of another heating appliance is utilized, and room temperature is maintained at preset temperature. In addition, in this combined operation mode, the heating output is controlled based on the room temperature detected by the hot air heater, and no data communication with other heaters is required. Combined operation is possible even with equipment.

  In addition, when the heating operation is stopped when the combined operation mode is executed, the automatic operation is not resumed. That is, when the operation of the hot air heater is stopped during the combined operation mode, if the user detects that the room temperature has dropped and resumes the automatic operation, the user can use the combined operation mode. If you forget that you were shut down at the end of the day (because you weren't driving in the first place) and stopped other heaters to leave the room, the hot air heater would detect a drop in room temperature. A situation can occur where driving resumes in a room where no one is present. However, since the heating apparatus of the present invention does not automatically resume operation once the operation is stopped, it is possible to avoid a situation unexpected by the user such as operation in a room where no one is present.

  In the combined operation mode, the heating output is reduced stepwise after a predetermined time has elapsed, but if the difference between the room temperature and the set temperature becomes large when the heating output is reduced stepwise, the heating output The heating output at that time is maintained by interrupting the decrease in the temperature. In other words, if the room temperature temporarily drops due to ventilation, etc., or if the heating capacity of other heating appliances cannot keep up with the degree of decrease in heating output, the difference between the room temperature and the set temperature will increase. For me, the room feels cold. Therefore, in such a case, by maintaining the heating output until the room temperature approaches the set temperature to some extent, it is possible to prevent the room temperature from being lowered more than necessary and to perform the heating operation without impairing the comfort of the user. It can be carried out.

  In the combined operation mode, the heating output is reduced stepwise after a predetermined time has elapsed, but if the difference between the room temperature and the set temperature becomes large when the heating output is reduced stepwise, the heating output Is raised step by step. In other words, if the room temperature temporarily drops due to ventilation, etc., or if the heating capacity of other heating appliances cannot keep up with the degree of decrease in heating output, the difference between the room temperature and the set temperature will increase. For me, the room feels cold. Therefore, when the difference between the room temperature and the set temperature is equal to or greater than the first predetermined value, the heating output is increased stepwise, and then the room temperature rises and the difference from the set temperature is equal to or less than the second predetermined value. When it becomes, the output is lowered again. Thereby, since a fall of room temperature is suppressed before a user feels cold, heating operation can be performed without impairing a user's comfort.

  Hereinafter, a fan heater using kerosene as a fuel will be described as an example of the hot air heater of the present invention with reference to the drawings.

  FIG. 1 is an internal configuration diagram of a fan heater which is an example of a warm air heating device. In a main body 1, a vaporizer 2 for heating and vaporizing kerosene and a vaporized gas generated in the vaporizer 2 are burned to generate heat. Burner 3 as heat generating means to be generated, oil supply tank 4 detachably attached to the main body 1, oil receiving tray 5 for storing kerosene supplied from the oil supply tank 4, and kerosene placed on the oil receiving tray 5 to the vaporizer 2 An electromagnetic pump 6 for pumping up the water is provided.

  A blower 7 for supplying air to the inside of the main body 1 is attached to the back surface of the main body 1, and the combustion exhaust gas generated by the combustion in the burner 3 is mixed with the air supplied from the blower 7 to become hot air. The room is heated by being discharged from the front surface of the main body 1.

  FIG. 2 is a block diagram illustrating a configuration of a control unit that controls the operation of the hot air heating apparatus. Connected to the input side of the control unit 8 composed of a microcomputer are a room temperature detection means 9 for detecting the room temperature, a flame detection means 10 for detecting the combustion state in the burner 3, and an operation section 12 for the user to operate the buttons. The operation unit 12 is provided with an operation button 13 for instructing start and stop of operation, a temperature setting button 14 for setting temperature, an operation switch button 15 as an operation mode switching means for switching the operation mode, and the like. . Further, on the output side of the control unit 8, in addition to the carburetor 2, the electromagnetic pump 6, and the blower 7, the display unit 11 that displays information such as temperature, time, or error is provided.

  Then, the control unit 8 determines the heating output (combustion amount) from the difference between the room temperature detected by the room temperature detecting means 9 and the set temperature set by operating the temperature setting button 14, and outputs for controlling the combustion in the burner 3. A determining means 16, a blower control means 17 for controlling the driving of the blower 7, a display control means 18 for controlling the contents displayed on the display unit 11, and a timer means 19 for measuring a predetermined time are provided.

  In addition, the fan heater determines the heating output from the difference between the room temperature and the set temperature and performs the heating operation to maintain the room temperature at the set temperature, and the combustion is intermittently caused by the difference between the room temperature and the set temperature. "Save operation mode" to be performed and "Combination operation mode" used when heating together with other heating appliances are provided. By operating the operation switching button 15, a predetermined operation is performed from a plurality of operation modes. Select a mode and execute.

  Here, the “combination operation mode” described above will be described in more detail. There are various types of heaters that heat indoors. Among them, heaters such as fan heaters that burn fuel such as kerosene and gas and use the combustion exhaust gas to raise the room temperature are quicker. It has the feature of being excellent. On the other hand, heating appliances that do not directly use the heat generated by combustion, such as air conditioners, oil heaters, or heat storage devices, are also used as a means of heating the room. However, even if it is used, it does not cause a decrease in the oxygen concentration in the room, but it is inferior in terms of quick warming compared to a combustion exhaust gas used for raising the room temperature. Therefore, if the outside air temperature is not so low, such as early spring or autumn, the room can be warmed only by heating with an air conditioner or the like, but if the outside air temperature becomes considerably low, it takes time to warm the room air, and heating operation starts. Sometimes the room feels cold without warming up. Therefore, when using a heater that is inferior in quick warming, such as an air conditioner or oil heater, the heating capacity that is excellent in quick warming, such as a fan heater, can be operated simultaneously to compensate for the lack of heating capacity, especially at the start of heating. It becomes possible to improve comfort.

  However, since individual heating appliances are designed to control the heating capacity on the premise that they are used alone, even if each target temperature is set and used, it is not always possible to make the best use of individual advantages. Is not possible. In other words, if the fan heater and the air conditioner are operated at the same time, the air conditioner detects the heat generated by the fan heater and determines that the room is warm.・ The heating capacity of air conditioners will not be used much for maintenance. This does not mean that a combined operation as intended by the user is being performed.

  Therefore, when operating a fan heater and other heating appliances together for indoor heating, select this combined operation mode and use the advantages of each heating appliance so that the heating of the fan heater can be performed. Control driving. That is, until a predetermined time has elapsed from the start of the combined operation mode, the room temperature is efficiently raised by utilizing the quick warming property of the fan heater, and the room temperature is quickly raised. And after predetermined time passes, it operates by reducing the heating output of a fan heater in steps so that other heating appliances may not operate by reducing the heating output. Further, when the heating output of the fan heater is reduced to a predetermined output, or when the room temperature reaches a predetermined temperature or a predetermined temperature lower than the predetermined temperature, it can be determined that the room can be heated only with other heating appliances. The heater is stopped.

  Next, the operation of the fan heater in the above configuration will be described with reference to FIGS.

  When the start of operation is instructed by operating the operation button 13 provided on the operation unit 12, the heater of the vaporizer 2 is energized and heating of the vaporizer 2 is started. When the vaporizer 2 is heated and rises to a temperature at which kerosene can be vaporized, the electromagnetic pump 6 is started to pump up kerosene in the oil tray 5 and kerosene is supplied to the vaporizer 2.

  Kerosene supplied to the vaporizer 2 is heated and vaporized to become vaporized gas, and is ejected toward the burner 3 from an ejection port provided at the tip of the vaporizer 2. Since the vaporized gas ejected toward the burner 3 takes in ambient air as primary air due to the ejector effect when ejected, the vaporized gas and the primary air are mixed inside the burner 3 to become a mixed gas. This mixed gas is ejected from the burner 3 and ignited by an ignition means (not shown) to start combustion.

  With the start of combustion, driving of the blower 7 is also started. A part of the air taken into the main body 1 by the rotation of the blower 7 is supplied to the flame as secondary air and the flame is completely burned. The exhaust gas generated by the combustion is mixed with the air taken into the main body 1. Becomes warm air and is discharged from the front surface of the main body 1. When the heating operation is started in this manner, the output determination means 16 determines the heating output based on the operation mode set by the operation switching button 15 and performs indoor heating.

<Normal operation mode>
When the “normal operation mode” is selected by the operation switching button 15, the output determining means 16 determines the heating output from the difference between the room temperature Tx and the set temperature T0, and the carburetor 2 is determined based on the heating output. The temperature of the heater to be heated and the amount of kerosene pumped up by the electromagnetic pump 6 are controlled. The rotational speed of the blower 7 is controlled by the blower control means 17, and combustion is performed in the burner 3 so that the room temperature Tx maintains the set temperature T0. . When the outside air temperature is relatively high, such as early spring or autumn, the room temperature Tx may exceed the set temperature T0 even if the heating output is minimized, but at this time, combustion is not stopped and combustion at the minimum output is performed. continue.

<Save operation mode>
From the start of operation until the room temperature Tx reaches the set temperature T0, the heating output is determined from the difference between the room temperature Tx and the set temperature T0 as in the normal operation mode, and the heater that heats the vaporizer 2 based on the heating output is determined. The temperature and the amount of kerosene pumped up by the electromagnetic pump 6 are controlled, and the rotational speed of the blower 7 is controlled by the blower control means 17. Here, the difference from the normal operation mode is that combustion is stopped when the room temperature Tx exceeds the set temperature T0 even if the heating output is minimized.

  Specifically, the room temperature Tx is compared with the set temperature T0, and when it is determined that the room temperature Tx is higher than the set temperature T0 by a predetermined temperature (for example, 3 ° C.), combustion in the burner 3 is stopped, and the display unit 11 Displays that the engine is in the combustion standby state in the save operation mode. When the combustion is stopped, the room temperature gradually decreases, and when it is determined that the room temperature Tx is lower than the set temperature T0 by a predetermined temperature (for example, 1 ° C.), the combustion is resumed. That is, the stop and restart of the combustion are repeated depending on the difference between the room temperature Tx and the set temperature T0, thereby enabling an operation that suppresses the consumption of kerosene by suppressing the state where the room temperature Tx exceeds the set temperature T0.

<Combination operation mode>
This mode is selected when operating together with other heating appliances. The other heating appliances here are heating appliances that are inferior to fan heaters in terms of quick warming, such as air conditioners, oil heaters, or heat storage devices. Point to.

  FIG. 3 is a flowchart showing the operation of the fan heater in the combined operation mode. First, the fan heater and other heaters are started to operate at a set temperature T0. When the operation switching button 15 is operated to select the “combination operation mode”, the target temperature T1 (T1 is an arbitrary temperature, T1 ≦ T0) is set for the fan heater (step 1). The heating output is determined by the output determining means 16 so as to bring the room temperature Tx closer to the target temperature T1 taking advantage of the rapid warming property of the heater, the temperature of the heater that heats the carburetor 2 based on this heating output, and the kerosene pumped up by the electromagnetic pump 6 Combustion in the burner 3 is performed by controlling the amount and the rotational speed of the blower 7. At this time, the other heating appliances also perform the heating operation, but the combustion heat generated by the fan heater is mainly used to raise the room temperature.

  Then, it is determined whether a predetermined time (first predetermined time) has elapsed since the start of the combined operation mode (step 2), and when the first predetermined time has elapsed, the output determining means 16 lowers the heating output by one step (step 3), Combustion in the burner 3 is continued with this heating output. At the same time as the heating output is lowered, the timer means 19 starts measuring time (step 4). In order to allow the room temperature Tx to reach the target temperature T1, a total heating output including the heating output of the fan heater and the heating output of other heating appliances is required. However, since the heating output of the fan heater is forcibly reduced, the heating output of other heating appliances is inevitably required, so that the other heating appliances continue to operate without reducing the heating output. Thereafter, it is determined whether the time measured by the timer means 19 has reached a predetermined time (second predetermined time) (step 5). When the second predetermined time has elapsed, the heating output is then reduced to a predetermined value (for example, the minimum value). Or whether the room temperature Tx has reached the target temperature T1 (step 6). If the heating output has not decreased to the predetermined value and the room temperature Tx has not reached the target temperature T1, the routine returns to step 3 where the heating output is lowered by one step and combustion is continued in the burner 3.

  In other words, when the second predetermined time has elapsed after the heating output is lowered, the heating output is repeatedly reduced in steps, so that the heating output of the fan heater is lowered, so that other heating appliances are operated without lowering the heating output. Will do. In other words, by controlling the heating output of the fan heater in stages, the heating operation intended by the user can be performed without communicating control data between the heating appliances.

  If it is detected in step 6 that the heating output of the fan heater has decreased to a predetermined value (for example, the minimum value), or if it is detected that the room temperature Tx has reached the target temperature T1, the fan heater is stopped. However, only other heaters are used for heating.

  Thus, when the combined operation mode is selected, the first predetermined time after starting the combined operation mode efficiently increases the room temperature by making use of the quick warming property of the fan heater, and then the other heating appliances output the heating. The heating output of the fan heater is reduced step by step so that it will not be operated at a reduced speed, and the advantages of each heating appliance can be improved by performing the heating operation as intended by the user. It can be used to create a comfortable indoor environment. Moreover, since data communication is not required, the heating appliance which becomes the object of combined operation is not limited and it is excellent also in versatility.

  The first predetermined time may always be the same, or the difference between the room temperature Tx and the set temperature T0 at the start of the combined operation mode is detected. If the difference is large, the first predetermined time is lengthened. May be shortened.

  FIGS. 4A and 4B are time charts showing temporal changes in the heating output of the fan heater and the room temperature in the combined operation mode described above. Until the first predetermined time elapses from the start of the combined operation mode, the operation is performed with the same heating output as in the normal operation mode, and the heating output gradually decreases when the first predetermined time elapses (point A). . In FIG. 4 (a), the operation is stopped when the heating output is minimized (point B), and in FIG. 4 (b), the room temperature Tx has reached the target temperature T1 before the heating output is minimized. The operation stops when the room temperature Tx reaches the target temperature T1 (point C). From point A to point B in FIG. 4 (a) and between point A and point C in FIG. 4 (b), the fan heater reduces the heating output, so that the heating mainly from the fan heater is changed to the heating mainly from other heaters. The room temperature gradually rises toward the set temperature T0. Then, after the operation of the fan heater is stopped, the room temperature is maintained at the set temperature T0 by heating only the other heaters.

  Further, in this combined operation mode, when the operation is stopped at the point B or C, the display unit 11 displays that the operation is stopped, and thereafter, the operation is not started unless the operation button 13 is operated. That is, unlike the save operation mode, the operation is not automatically resumed by detecting the room temperature. When the operation is stopped, if the automatic operation is resumed by detecting a drop in the room temperature, forget that the user has been stopped in the combined operation mode. When the operation of other heaters is stopped to leave the room, the fan heater may detect a decrease in the room temperature and restart the operation in a room where no one is present. However, once the operation is stopped, if the operation is not automatically resumed, it is possible to avoid a situation where the user does not expect that the operation is performed in a room where no one is present.

  In this embodiment, the operation mode has been described as having three modes of “normal operation mode”, “save operation mode”, and “combination operation mode”. However, at least “normal operation mode” and “combination operation mode” are described. What is necessary is just to have two, and other operation modes are not limited to a present Example.

  In addition, although it has been described that the operation is started with both the fan heater and other heaters set to the same temperature T0, the set temperatures do not necessarily have to be the same, and even if they are different, the combined operation can be performed. It is.

  Next, Embodiment 2 of the present invention will be described with reference to FIG. In addition, since the structure of the fan heater of a present Example is the same as Example 1, it attaches | subjects the same code | symbol and abbreviate | omits description.

  FIG. 5 is a flowchart showing the operation of the fan heater in the combined operation mode of the second embodiment. First, the fan heater and other heaters are started to operate at a set temperature T0. When the operation switching button 15 is operated to select the “combination operation mode”, the target temperature T1 (T1 is an arbitrary temperature, T1 ≦ T0) is set for the fan heater (step 1). The heating output is determined by the output determining means 16 so as to bring the room temperature Tx closer to the target temperature T1 taking advantage of the rapid warming property of the heater, the temperature of the heater that heats the carburetor 2 based on this heating output, and the kerosene pumped up by the electromagnetic pump 6 Combustion in the burner 3 is performed by controlling the amount and the rotational speed of the blower 7. At this time, other heating appliances are also in the heating operation, but the combustion heat generated by the fan heater is mainly used to raise the room temperature.

  Then, it is determined whether a predetermined time (first predetermined time) has elapsed since the start of the combined operation mode (step 2), and when the first predetermined time has elapsed, the output determining means 16 lowers the heating output by one step (step 3), Combustion in the burner 3 is continued with this heating output. Since the fan heater has lowered the heating output, the heating output of the other heating appliances is required, so that the other heating appliances continue to operate without reducing the heating output. Further, since the timer means 19 starts measuring time as soon as the heating output is lowered (step 4), it is determined whether the time measured by the timer means 19 has reached a predetermined time (second predetermined time) (step 5). 2 When a predetermined time has elapsed, it is next determined whether the heating output has decreased to a predetermined value (for example, the minimum value) or whether the room temperature Tx has reached the target temperature T1 (step 6). If the heating output has not decreased to the predetermined value and the room temperature Tx has not reached the target temperature T1, then the room temperature Tx is compared with the set temperature T0 (step 7), and the room temperature Tx and the set temperature T0 are compared. If the difference is within the predetermined value, the process returns to step 3 to further decrease the heating output, but if the difference is greater than the predetermined value, the heating output is maintained as it is without decreasing the heating output (step 8).

  That is, if the difference between the room temperature Tx and the set temperature T0 is within a predetermined value when the second predetermined time has elapsed after the heating output is lowered in step 3, the room temperature can be maintained at the current heating output. It is determined that the heating output is gradually reduced. When the heating output of the fan heater is lowered, the other heaters are operated without reducing the heating output.

  On the other hand, if the difference between the room temperature Tx and the set temperature T0 is equal to or greater than a predetermined value, the room temperature cannot be maintained with the current heating output, that is, the heating capacity of other heating appliances is reduced due to a decrease in the heating output of the fan heater. It is considered that the situation has not caught up. If the heating output of the fan heater is reduced in this state, the room temperature may be further lowered, and the user will feel cold. Therefore, when the difference between the room temperature Tx and the set temperature T0 is equal to or greater than a predetermined value, the heating output is maintained until the difference between the room temperature and the set temperature approaches to some extent. Thereby, it is possible to prevent the room temperature from being lowered more than necessary and perform the heating operation without impairing the comfort of the user. Since the process returns to step 4 when the heating output is maintained, the timer means 19 starts counting from that point, and compares the room temperature Tx with the set temperature T0 again when the second predetermined time has elapsed. If it is determined in step 7 that the difference between the room temperature Tx and the set temperature T0 is within a predetermined value, the process proceeds to step 3 to reduce the heating output.

  If it is detected in step 6 that the heating output of the fan heater has decreased to a predetermined value (for example, the minimum value), or if it is detected that the room temperature Tx has reached the target temperature T1, the fan heater is stopped. However, only other heaters are used for heating.

  Next, Embodiment 3 of the present invention will be described with reference to FIG. In addition, since the structure of the fan heater of a present Example is the same as Example 1, 2, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  FIG. 6 is a flowchart showing the operation of the fan heater in the combined operation mode of the third embodiment. First, the fan heater and other heaters are started to operate at a set temperature T0. When the operation switching button 15 is operated to select the “combination operation mode”, the target temperature T1 (T1 is an arbitrary temperature, T1 ≦ T0) is set for the fan heater (step 1). The heating output is determined by the output determining means 16 so as to bring the room temperature Tx closer to the target temperature T1 taking advantage of the rapid warming property of the heater, the temperature of the heater that heats the carburetor 2 based on this heating output, and the kerosene pumped up by the electromagnetic pump 6 Combustion in the burner 3 is performed by controlling the amount and the rotational speed of the blower 7. At this time, other heating appliances are also in the heating operation, but the combustion heat generated by the fan heater is mainly used to raise the room temperature.

  Then, it is determined whether a predetermined time (first predetermined time) has elapsed since the start of the combined operation mode (step 2), and when the first predetermined time has elapsed, the output determining means 16 lowers the heating output by one step (step 3), Combustion in the burner 3 is continued with this heating output. Since the fan heater has lowered the heating output, the heating output of the other heating appliances is required, so that the other heating appliances continue to operate without reducing the heating output. Further, since the timer means 19 starts measuring time as soon as the heating output is lowered (step 4), it is determined whether the time measured by the timer means 19 has reached a predetermined time (second predetermined time) (step 5). 2 When a predetermined time has elapsed, it is next determined whether the heating output has decreased to a predetermined value (for example, the minimum value) or whether the room temperature Tx has reached the target temperature T1 (step 6). If the heating output has not decreased to the predetermined value and the room temperature Tx has not reached the target temperature T1, then the room temperature Tx is compared with the set temperature T0 (step 7), and the room temperature Tx and the set temperature T0 are compared. If the difference is within the first predetermined value, the process returns to step 3 to further decrease the heating output by one step. If the difference is equal to or greater than the first predetermined value, the heating output is increased by one step (step 8).

  That is, if the difference between the room temperature Tx and the set temperature T0 is within the first predetermined value after the second predetermined time has elapsed since the heating output was lowered in step 3, the room temperature can be maintained at the current heating output. Judging that it is done, it repeats decreasing heating output in steps. When the heating output of the fan heater is lowered, the other heaters are operated without reducing the heating output.

  On the other hand, if the difference between the room temperature Tx and the set temperature T0 is equal to or greater than the first predetermined value, the room temperature cannot be maintained with the current heating output, that is, the heating output of the other heaters is reduced due to a decrease in the heating output of the fan heater. It is considered that the ability has not caught up. If the heating output of the fan heater is reduced in this state, the room temperature may be further lowered, and the user will feel cold. Therefore, when the difference between the room temperature Tx and the set temperature T0 is equal to or greater than the first predetermined value, the heating output is increased by one step. Thereby, before a user feels that it is cold, the fall of room temperature can be prevented and a heating operation can be performed without impairing a user's comfort. When the heating output is increased, the process returns to step 4 so that the timer means 19 starts timing from that point, and compares the room temperature Tx with the set temperature T0 again when the second predetermined time has elapsed. . Then, it is determined whether the difference between the room temperature Tx and the set temperature T0 is within a second predetermined value (first predetermined value> second predetermined value) (steps 7 and 9), and is within the second predetermined value. If it does, it will progress to step 3 and will reduce heating output.

  If it is detected in step 6 that the heating output of the fan heater has decreased to a predetermined value (for example, the minimum value), or if it is detected that the room temperature Tx has reached the target temperature T1, the fan heater is stopped. However, only other heaters are used for heating.

3 Burner (heat generation means)
9 Room temperature detection means 15 Operation switching button (operation mode switching means)
16 Output determining means

Claims (5)

Operation mode switching means for switching the operation mode, output determining means for determining the heating output, heat generating means for generating heat by burning fuel based on the heating output determined by the output determining means, and room temperature for detecting the room temperature A detection means, wherein the operation mode includes at least a normal operation mode and a combined operation mode selected when other heating appliances are used in combination, and the output determining means is set to room temperature in the normal operation mode. The heating output is determined so that the room temperature is maintained near the set temperature from the temperature, and in the combined operation mode, the heating output is decreased after a predetermined time has elapsed from the start of the combined operation mode, and the heating output reaches a predetermined value, or the room temperature After the temperature reaches a set temperature or a predetermined temperature lower than the set temperature, the heat generating means is stopped to stop the heating operation. Operation mode switching means for switching the operation mode, output determining means for determining the heating output, heat generating means for generating heat by burning fuel based on the heating output determined by the output determining means, and room temperature for detecting the room temperature A detection means, wherein the operation mode includes at least a normal operation mode and a combined operation mode selected when other heating appliances are used in combination, and the output determining means is set to room temperature in the normal operation mode. The heating output is determined so that the room temperature is maintained near the set temperature from the temperature, and in the combined operation mode, the heating output is decreased after a predetermined time has elapsed from the start of the combined operation mode, and the heating output reaches a predetermined value, or the room temperature After the temperature reaches a predetermined temperature lower than the set temperature, the heat generating means is stopped to stop the heating operation. 3. The temperature according to claim 1, wherein when the heating operation is stopped in the combined operation mode, it is displayed that the heating operation is stopped, and the heating operation is not automatically restarted. Wind heating device. The output determining means reduces the heating output in a stepwise manner when a predetermined time has elapsed from the start of the combined operation mode, and when the difference between the set temperature and the room temperature becomes a predetermined value or more while the heating output is decreasing. The warm air heating device according to any one of claims 1 to 3 , wherein the heating output is maintained. The output determining means reduces the heating output in a stepwise manner when a predetermined time has elapsed from the start of the combined operation mode, and the difference between the set temperature and the room temperature becomes equal to or more than a first predetermined value while the heating output is decreasing. 4. The heating output is increased stepwise when the temperature falls, and the heating output is decreased stepwise when the difference between the set temperature and the room temperature falls within a second predetermined value . 5. warm-air heating apparatus according to One.

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